cooper



(No Model.)

O. P. COOPER.

DOOR FASTENER.

No. 546,064. Patented Sept. 10, 1895.

UNITED ra'rns a'rnNT lenient CHARLES P. COOPER, OF NEW YORK, N. Y.

DOOR-FASTENER.

SPECIFICATION forming part of Letters Patent No. 546,064, dated September 10, 1895.

Application filed March 2'7, 1895- Serial No. 543,434. (No model.)

I citizen of the United States, residing at New York, county of New York, and State of New York, have invented certain new and useful Improvements in Door-Fasteners, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

My invention relates to that class of doorfasteners consisting of a piece of metal or other suitable material having branches ex tending at an angle to each other and so arranged that when one of its branches is inserted between the margin of the door and its casing and the other branch rests upon a stationary surface in proximity to the margin of the door an incline is formed up which the door must pass in opening, and thereby preventing the opening of the door so long as the fastener is in position.

The object of the invention is to provide an improved fastener of this class which shall be certain and eflicient in its locking action, and, further, to provide afastener which cannot be displaced by the insertion of a thin implement between the door and easing.

A practical embodiment of my invention is represented in the accompanying drawings, in which- Figure 1 shows the fastener applied to a door as in practical use. Fig. 2 is an enlarged perspective edge view of the fastenenand Fig. 3 is a face view of the under side of fastener.

The fastener is here shown in its preferred form as formed of a flat bar of metal-steel, for examplethe said bar being bent somewhat nearer one end than the other, forming two branches A and A at an angle of ninety degrees to each other, more or less. The end of the longer branch Ais preferably reduced to a thin edge a, adapted to be inserted under the bottom of a door or between the free edge of the door and the casing. I have shown it in Fig. l as in engagement with the bottom of a door B, between it and the sill O. I much prefer to form the bevel 1 for reducing the bar to the edged on the under side of the branch A, leaving the upper side of said branch straight from the edge back toward the bend, as this construction aids greatly in preventing the displacementof the fastener from the opposite side of the door by inserting a thin implement, such as a knife-blade. I prefer, also, to bevel on the side edges of the branch A for some distance from the bevel 1, these bevels 2 forming edgesat opposite sides of the branch A, which afford no hold for such a thin implement, which otherwise might be used to move the fastener sidewise. The branch A of the fastener is provided with a pair of pointed legs (1 conveniently formed by ,reoessing the end of the branch A and beveling it on its under side. When in position to fasten the pointed legs a will rest on the sill or on the floor adjacent to the sill in such position that any attempt to open the door and slide it by the branch A will have a tendency to press the pointed legs a into the sill or floor, and thereby eifectually pre vent the displacement of the fastener, and the difference between the lengths of the two branches A A being small and the angle in the neighborhood of ninety degrees the door branch A will present a steep incline adja cent to the door, and will consequently prevent the door from being opened to any considerable extent. This incline may be varied somewhat and fairly good results be obtained; but for the best results it should form with the floor an angle of about thirty degrees, and for good results the incline formed by the branch A with the floor when the fastener is on a level surface must be at least twenty degrees. It will be understood, however, that a fastener having the bevels de scribed forms a part of the invention whether employing this steep incline or not.

WVhat is claimed is- 1, A door fastenerhaving the branches A, A, the door branch A being beveled to form edge a and having side bevels 2 on its opposite edges, substantially as described.

2. A door fastener having the branches A, 5

A, the door branch A forming an angle of at least twenty deglrees with a level surface and having the beve 1 on its under side forming A edge a, and a Straight surface on its opposite CHARLES COOPER 5 side and having side edge bevels 2, substan- W'itnesses:

tially as described. 0. J. SAWYER, In testimony whereof I have hereunto set A. L. KENT.

my hand in the presence of two subscribing witnesses. 

